For reference, for my fellow geeks.
Normal male testosterone is anywhere between 10 and 30 nmol/litre.
Men do not receive treatment for low testosterone until they hit about 8 nmol/litre.
The IOC limit for testosterone in female events (to encompass women with androgen insensitivity and also transwomen) is 10 nmol/litre.
The female population as a whole has an average testosterone level of 1.5nmol/litre. Women with PCOS typically have testosterone levels of 2.5nmol/litre.
10nmol/litre is (in terms of its unlikeliness in the female population) 5 sigma above the female mean.
Here's what five sigma means, taken from the physics.org website:
"5 sigma is a measure of how confident scientists feel their results are. If experiments show results to a 5 sigma confidence level, that means if the results were due to chance and the experiment was repeated 3.5 million times then it would be expected to see the strength of conclusion in the result no more than once."
And of course T is not the whole story. Men have much greater VOMax (measure of lung capacity/ability to oxygenate blood) and that doesn't go away when they take testosterone suppressants (and VOMax is massively important in cycling - it's one of the measures used in men's pro cycling to assess how likely someone is to be doping). They're taller on average, have a different angle between hip and thigh bone, greater grip strength...
TLDR: McKinnon is a cheaty McCheat face.